Improvement in stop-valves



JAMES WALSH.

Improvement in Stop-Valves.

No. H5794f v Patentadlune 6,1871

stop -valve; Fig. 2,

PATENT OFFICE.

JAMES WALSH, 0F PHILADELPHIA, PENNSYLVANIA.

- IMPROVEMENT IN STOP-VALVES.

Specification forming part of Letters Patent No. 115,794, dated June 6,1871.

Nature and Object of the Irwent'ion.

My invention consists of a stop-valve, fully described hereafter,constructed with a view of rendering the joints in the said valve steamand water tight without the aid of any elastic packing, the valve beingespecially applicable to hot-water or steamheating pipes.

Description, of the Accompanying Drawing. Figure l is a sectional viewof my improved a sectional view on the line 1 2, Fig. 1.; and Fig. 3, adetached view;

General Description.

A represents the valve-casin g, n ear the lower end of which are theinlet and outlet branches, arranged in line with each other, andthreaded, as usual, for attachment to the supply-pipe O anddischargepipe D. The supply-pipe G communicates with the interior of thecasing A through an opening, a, directly beneath the valveE, the latterconsisting of the semi-spherical portion i), adapted to asimilarly-shaped seat, N, in the bottom of the case A, and a cylindricalportion, Z2 arranged to fit and move freely in the interior of the saidcase. The valve E is operated by a screw, F, adapted to internal threadsin the said valve; but the latter is prevented from turning in thecasing A by wings, cl [1, which project from it into the vertical slotsd d of a hollow plug, G, Fig. 3, which is screwed into the upper portionof the case A. On top of the screw-plug G is formed a groundseat, c, towhich is adapted the edge of a disk, 6. The upper edge of the casing Ais also accurately turned and ground to form a seat for a disk, f, bothof these disks turning with, and, if desired, forming part of thescrew-spindle F. Between the upper disk f and the under side of thescrewcap H, and surrounding the spindle F, is an annular spring, S, theobject of which is to hold the disks f and e firmly'in their seats witha slightly elastic pressure, which must be sufficient to resist that ofthe steam or water in the pipes. In some cases I dispense with thespring and maintain the disks in their seats by the cap H but I preferthe use of the spring in the manner described.

It will be seen that by the above-described arrangement I secureperfectly steam and water tight joints without the aid of elasticpacking, common to, but always objectionable in, stop-valves used forsteam or hot-water pipes, as such packing interferes with the freeworking of the valves and is difficult to keep in proper order. It willbe seen that with a slight modification of the inlet and dischargebranches the valve can be converted into a faucet or cook suitable forwash-basins, bath-tubs, 850., the interior arrangement of the groundjoints being maintained.

Claims.

1. The combination with the screw-spindle F, carrying avalve, E, of thesupplementary valves or disks f and 6, adapted to seats on thevalve-casing and on a screw-plug, G, fitted within the said casing, allsubstantially. as specified.

2. Thescrew-plugGfitted within the casing, slotted for the reception ofthe Wings at of the valve E, and having a seat formed on it for the diskor valve 6, all as set forth.

Intestimony whereof I have signed my name to this specification in thepresence of two subsoribin g witnesses.

JAMES WALSH.

Witnesses:

WVM. A. STEEL, JNo. B. HARDING.

